contestada

What is the exact value for the expression the square root of 52. − the square root of 13. + the square root of 117.? Simplify if possible.

A:4 the square root of 13.
B:the square root of 13.
C:2 the square root of 39.
D:8 the square root of 39.

Respuesta :

bcalle
The answer is A. 4sqrt 13
Greenleafable
√52 - √13 + √117 - you can see that the number all of these numbers have in common is 13, and we can use that to simplify the expression

So, √13*4 - √13 + √13*9 = 
2√13 - √13 + 3√13=
4√13

The correct answer is A. 4 the square root of 13